(1)Subject to any provision of this Act or of rules under section 41, the procedure and conduct of an inquiry are to be such as the chairman of the inquiry may direct.
(2)In particular, the chairman may take evidence on oath, and for that purpose may administer oaths.
(3)In making any decision as to the procedure or conduct of an inquiry, the chairman must act with fairness and with regard also to the need to avoid any unnecessary cost (whether to public funds or to witnesses or others).